Pennsylvanian Fern Imprint (072817f)

Description

Pennsylvanian Fern Imprint (072817f)

Name: Alethopteris sp

Age: Carboniferous (Pennsylvanian) Age 280 mill yrs

Formation: Llewellyn Formation

Location: St. Clair, Pennsylvania

Pennsylvanian fern plant fossils from eastern Pennsylvania anthracite coal mines. The ferns are preserved in the mineral pyrophyllite, which sometimes gives them a crisp bold white or silver appearance. Pyrophyllite is a pyrite pseudomorph. Any orange or gold color was caused by iron ores in the ground.

This collecting locality has now been closed and these specimens will be hard to obtainPrice is $32.00